FFT Peak at Zero

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Matlab1364 on 29 Mar 2019
Commented: Mohamad Mossad on 10 Dec 2019
I am trying to plot the FFT for a data set I have. I keep getting a peak around zero and have problem with filtering. I also tried the detrend function, but I still don’t get a nice plot. I have attached my data set. I am planning to calculate FFT for the “roll” column from my data set. I appreciate your help.
Image Analyst
Image Analyst on 29 Mar 2019
Just what I was going to say, so put it down in the Answers section so you can get credit for it.

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Answers (1)

Catalytic on 29 Mar 2019
Edited: Catalytic on 29 Mar 2019
Apply fftshift to your spectrum to see it with DC centered in the plot.
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Mohamad Mossad
Mohamad Mossad on 10 Dec 2019
about 8 months later, thanks :)

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